To export Mailman mailing list subscribers including the subscribers names to a text file: via ssh shell, execute this command. Remember to change “exported_file” and “list_name”.
/usr/local/cpanel/3rdparty/mailman/bin/list_members -f -o exported_file list_name Where: exported_file: the name of the file you would like to store the subscribers list_name: the name of the mailman mailing list
That is it 
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This gives you just the email addresses of subscribers. What about all the other options, like language settings, passwords, hidden etc. ??? Show me how good mailman is, please!